DE10063377A1 - Automatic determination of replacement point for grinding or crushing rollers by measuring the ridge surface and comparing it with the original ridge cross section - Google Patents

Automatic determination of replacement point for grinding or crushing rollers by measuring the ridge surface and comparing it with the original ridge cross section

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Publication number
DE10063377A1
DE10063377A1 DE10063377A DE10063377A DE10063377A1 DE 10063377 A1 DE10063377 A1 DE 10063377A1 DE 10063377 A DE10063377 A DE 10063377A DE 10063377 A DE10063377 A DE 10063377A DE 10063377 A1 DE10063377 A1 DE 10063377A1
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DE
Germany
Prior art keywords
roller
wear
corrugated
determined
taken
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE10063377A
Other languages
German (de)
Other versions
DE10063377B4 (en
Inventor
Norbert Jauns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Buehler AG
Original Assignee
Buehler AG
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Filing date
Publication date
Application filed by Buehler AG filed Critical Buehler AG
Priority to DE10063377A priority Critical patent/DE10063377B4/en
Publication of DE10063377A1 publication Critical patent/DE10063377A1/en
Application granted granted Critical
Publication of DE10063377B4 publication Critical patent/DE10063377B4/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56—Investigating resistance to wear or abrasion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2210/00—Codes relating to different types of disintegrating devices
    • B02C2210/01—Indication of wear on beaters, knives, rollers, anvils, linings and the like
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0244—Tests performed "in situ" or after "in situ" use

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Crushing And Grinding (AREA)
  • Control Of Metal Rolling (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Metal Rolling (AREA)

Abstract

Method for evaluating wear states of a grooved roller, in which a profile impression is taken at suitable points on the grooved roller, the cross section of the grooved surface is determined and compared with the original surface cross section. The remaining ridge surface is taken as a measure of roller wear. An Independent claim is made for a method for determining the point at which grinding or crushing rollers require replacement.

Description

Die Erfindung betrifft ein Verfahren zur Bewertung von Verschleisszuständen an Riffel­ walzen, wie sie zum Beispiel für das Mahlen von körnigem Gut verwendet werden.The invention relates to a method for evaluating wear conditions on corrugations rollers, such as those used for grinding granular material.

Riffelwalzen finden in Mahlmaschinen (DE OS 30 04 715, EP-A-829693 u. a.) oder auch in Walzwerken (EP-A-979726) Anwendung. Die Riffel unterliegen Verschleisserschei­ nungen und müssen daher mittels Riffelstählen oder anderen Werkzeugen nachgear­ beitet werden. Für eine ausreichende Lebensdauer (Standzeit) und Produktbearbeitung müssen die Walzen sauber geriffelt werden.Corrugated rollers can be found in grinding machines (DE OS 30 04 715, EP-A-829693 and others) or also in rolling mills (EP-A-979726) application. The corrugations are subject to wear and tear and must therefore be reworked using corrugated steel or other tools be prepared. For a sufficient lifespan (service life) and product processing the rollers must be corrugated cleanly.

Dazu ist es auch bekannt, die Riffelwalzen (EP-A-547097) oder auch nur die Riffel selbst partiell zu härten (DE-A-37 11 451).For this purpose, it is also known, the corrugated rollers (EP-A-547097) or only the corrugated to harden partially (DE-A-37 11 451).

Von der Erfahrung und Aufmerksamkeit des Bedienpersonals von Walzwerken, Mahl­ maschinen oder dergleichen hängt es ab, den zulässigen Verschleiss der Riffel zu er­ kennen und Schäden oder unzureichende Produktbearbeitung zu vermeiden. Derartige subjektive Bewertungen sind unsicher.From the experience and attention of the operators of rolling mills, grinding machines or the like depends on the permissible wear of the corrugations know and avoid damage or inadequate product processing. such subjective ratings are uncertain.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Bewertung von Ver­ schleisszuständen, zur Auswertung von Walzenriffelabdrücken zu entwickeln, das es gestattet, den Zeitpunkt eines Walzenwechsels zu bestimmen. Die Lösung dieser Auf­ gabe erfolgt mit den Merkmalen des Patentanspruchs.The invention is therefore based on the object of a method for evaluating Ver wear conditions, for the evaluation of roll corrugation marks to develop it allowed to determine the time of a roll change. The solution to this sabe with the features of the claim.

Durch die Erfassung von Restriffelflächen kann der Verschleiss der Riffel ermittelt und daraus der ungefähre Zeitpunkt einer Instandsetzung bzw. eines Walzenwechsels er­ mittelt werden. Hierbei wird gegenüber dem Stand der Technik der tatsächliche Zustand der Walzen erfasst und nicht auf eine, rein subjektive Oberflächenprüfung vertraut. Ein Walzenwechsel kann zeitgerecht nach objektiven Verschleisskriterien erfolgen. The wear of the ripples can be determined and determined by recording residual ripple areas from this the approximate time of a repair or roller change be averaged. Here, the actual state compared to the prior art of the rollers and not relying on a purely subjective surface inspection. On Roll changes can be made on time according to objective wear criteria.  

Die Erfindung wird nachfolgend in einem Ausführungsbeispiel an Hand einer Zeichnung näher beschrieben. In der Zeichnung zeigen dieThe invention is described in an exemplary embodiment based on a drawing described in more detail. In the drawing they show

Fig. 1 ein Verschleiss-Zeit-Diagramm Fig. 1 is a wear-time diagram

Fig. 2 ein Diagramm der verbliebenen Riffelfläche AR einer Riffelwalze Fig. 2 is a diagram of the remaining corrugated surface A R of a corrugated roller

Von einer Riffelwalze einer Mahlwalzenpassage wird mittels einer geeigneten Masse ein Profilabdruck genommen, um ein repräsentatives Abbild des Walzenzustandes zu erhalten und auszuwerten. Die Walzenoberfläche muss hierbei so beschaffen sein, dass eine Verfälschung des Abdruckes vermieden wird. Dieser Abdruck, der möglichst an geeigneten, bevorzugt drei Stellen, verteilt über die Länge l der Riffelwalze zu neh­ men ist, wird geschliffen, um in einem Profilprojektor bei entsprechender Vergrösserung betrachtet werden zu können. Dieser Ist-Zustand wird mit dem ursprünglichen Riffelzu­ stand verglichen und durch ausplanimetrieren der verschlissenen bzw. der noch vor­ handenen Riffelquerschnittsfläche mit der ursprünglichen Fläche ist eine Beurteilung der verbliebenen Riffelfläche AR möglich. Neben dem Walzenverschleiss sind dabei auch Aussagen über die Gleichmässigkeit der Produktspeisung möglich.A profile impression is taken from a corrugated roller of a grinding roller passage using a suitable mass in order to obtain and evaluate a representative image of the roller state. The roller surface must be such that the impression is not falsified. This impression, which is to be taken at suitable, preferably three locations, distributed over the length l of the corrugating roller, is ground so that it can be viewed in a profile projector with a corresponding magnification. This actual state is compared with the original Riffelzu status and by leveling out the worn or the existing Riffel cross-sectional area with the original area, an assessment of the remaining Riffel area A R is possible. In addition to roller wear, statements about the uniformity of the product feed are also possible.

In Abständen werden mehrere derartige Abdrücke genommen, so dass ein Ver­ schleissdiagramm in Abhängigkeit von der Zeit (Betriebsstunden) vorliegt und bei be­ kannten bzw. gesetzten Verschleissgrenzen G ist der ungefähre Zeitpunkt tw für einen Walzenwechsel bzw. für die Instandsetzung der Walze bzw. der Walzen eines Walzen­ paares bestimmbar.At intervals, several such impressions are taken, so that a wear diagram is available depending on the time (hours of operation) and if the wear limits G are known or set, the approximate time t w is for a roll change or for the repair of the roll or Rolling of a rolling pair can be determined.

Claims (5)

1. Verfahren zur Bewertung von Verschleisszuständen, insbesondere an ei­ ner Riffelwalze, dadurch gekennzeichnet, dass
an geeigneten Stellen der Riffelwalze ein Profilabdruck der Riffel genommen wird,
das Profil bzw. der Querschnitt der Riffelfläche (AR) ermittelt wird und
die Riffelfläche (AR) mit der ursprünglichen Fläche der Riffel verglichen wird und
die verbliebene Riffelfläche (AR) als Mass für den Walzenverschleiss verwendet wird.1. Method for evaluating wear conditions, in particular on a corrugated roller, characterized in that
a profile impression of the corrugation is taken at suitable points on the corrugating roller,
the profile or the cross section of the corrugated surface (A R ) is determined and
the corrugation area (A R ) is compared with the original area of the corrugations and
the remaining corrugated surface (A R ) is used as a measure of the roll wear. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass an drei Stellen der Walze, verteilt über deren Länge, ein Profilabdruck genommen wird.2. The method according to claim 1, characterized in that at three points a profile impression is taken of the roller, distributed over its length. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in Ab­ ständen mehrere Abdrücke genommen werden, aus deren Verlauf bei bekannter Ver­ schleissgrenze der Zeitpunkt eines Walzenwechsels bestimmbar wird.3. The method according to claim 1 or 2, characterized in that in Ab would be taken several impressions, the course of which with known Ver wear limit the time of a roll change can be determined. 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Walzen eines Walzenpaares als Folge einer Auswertung über die Zeit gewechselt werden.4. The method according to claim 3, characterized in that the rollers of a pair of rollers can be changed over time as a result of an evaluation. 5. Verfahren zum Walzenwechsel von Riffelwalzen, insbesondere an Mahl­ maschinen oder Mahlwalzwerken, wobei der Zeitpunkt des Walzenwechsels dadurch bestimmt wird, dass
an geeigneten Stellen der Riffelwalze ein Ist-Profil der Riffel ermittelt wird
aus diesem Ist-Profil Riffelflächen (AR) ermittelt und mit der ursprünglichen Fläche der Riffel dem Sollprofil verglichen werden,
die Riffelfläche (AR) als Mass für den Walzenverschleiss verwendet wird, wobei in zeitlichen Abständen mehrere Abdrücke genommen und erfasst werden,
so dass bei bekannter Verschleissgrenze die Walze gewechselt wird, sobald die verbliebene Riffelfläche (AR) die Verschleissgrenze rechnerisch erreicht bzw. unter­ schreitet.5. A method for changing rolls of corrugated rolls, in particular on grinding machines or grinding rolls, the time of the roll change being determined in that
an actual profile of the corrugation is determined at suitable points on the corrugating roller
from this actual profile, corrugated surfaces (A R ) are determined and compared to the nominal profile with the original surface of the corrugations,
the corrugated surface (A R ) is used as a measure of the roll wear, several impressions being taken and recorded at intervals,
so that if the wear limit is known, the roller is changed as soon as the remaining corrugated surface (A R ) reaches or undercuts the wear limit.
DE10063377A 2000-12-19 2000-12-19 Method for determining a roll change of corrugating rolls Expired - Lifetime DE10063377B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10063377A DE10063377B4 (en) 2000-12-19 2000-12-19 Method for determining a roll change of corrugating rolls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10063377A DE10063377B4 (en) 2000-12-19 2000-12-19 Method for determining a roll change of corrugating rolls

Publications (2)

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DE10063377A1 true DE10063377A1 (en) 2002-06-20
DE10063377B4 DE10063377B4 (en) 2013-06-27

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DE10063377A Expired - Lifetime DE10063377B4 (en) 2000-12-19 2000-12-19 Method for determining a roll change of corrugating rolls

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108827812A (en) * 2018-06-20 2018-11-16 林继鹏 A kind of pavement marking paint wearability energy conservation and environmental protection detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017125576A1 (en) 2016-01-20 2017-07-27 Bühler AG Apparatus and method for characterizing a surface of a roller or grooved roller

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD201501A1 (en) * 1981-11-09 1983-07-20 Dieter Haensch DEVICE FOR MEASURING THE MEASUREMENT OF RIBBONS OF MACHINES

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108827812A (en) * 2018-06-20 2018-11-16 林继鹏 A kind of pavement marking paint wearability energy conservation and environmental protection detector
CN108827812B (en) * 2018-06-20 2021-02-26 津安（天津）建筑节能设施运营管理有限公司 Energy-saving and environment-friendly detector and detection method for wear resistance of pavement marking paint

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Publication number Publication date
DE10063377B4 (en) 2013-06-27

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